diff --git a/src/agents/tools/web-search.ts b/src/agents/tools/web-search.ts
index 1d87676e8..52f06a0b3 100644
--- a/src/agents/tools/web-search.ts
+++ b/src/agents/tools/web-search.ts
@@ -375,6 +375,7 @@ async function runWebSearch(params: {
     method: "GET",
     headers: {
       Accept: "application/json",
+      "Cache-Control": "no-cache",
       "X-Subscription-Token": params.apiKey,
     },
     signal: withTimeout(undefined, params.timeoutSeconds * 1000),